Following are links to professional organizations that have Web Sites relating to Turfgrass:

Turfgrass Producers International is the international association for Turfgrass producers.  The site has a significant amount of information relating to Turfgrass as well as links to many related sites.

National Turfgrass Evaluation Program (NTEP) provides test results for all major turfgrass species.  Millennium, Plantation and Masterpiece fescues tied for first place in the National Turfgrass Trials.

Other related Web sites are listed below:

American Seed Trade Association  
American Society of Agronomy
 
American Society of Landscape 
Architects
Arbor Day Institute  
Associated Landscape Contractors Association
 
Audubon Cooperative Sanctuary System
 
Center for Aquatic Weed Control
 
Environmental Protection Agency
 
GreenSearch, Inc.
 
Grounds Maintenance Magazine
 
Irrigation Association
 
Keep America Beautiful
 
Michigan State University 
Turfgrass Information Center
 
National Arborist Association
 
National Lawn & Garden Distributors Association
 
National Parks & Conservation Association
 
National Recreation & Park Association
 
National Wildlife Federation
 
Outdoor Power Equipment Institute
 
Professional Lawn Care Association of America
 
Soil & Water Conservation Society
 
Sports Turf Managers Association
 
Weed Science Society of America